Sublacustrine hydrothermal seeps in northern Lake Tanganyika, East African Rift; 1991 Tanganydro expedition

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Volume Title:Bulletin des Centres de Recherches Exploration-Production Elf-Aquitaine
Source:Bulletin des Centres de Recherches Exploration-Production Elf-Aquitaine, 16(1), p.55-81. Publisher: Société Nationale Elf-Aquitaine (Production), Pau, France. ISSN: 0396-2687
Publication Date:1992
Note:In English. 1 p. refs.; illus., incl. 7 plates, 2 tables, sketch map
Summary:The main field results of investigations into sublacustrine hydrothermal seeps at Pemba and Cape Banza, and two newly discoverd sites at Luhanga and Mbemvi, are presented. The sites are located along the major N-S border faults of N Tanganyika, the Uvira, and the W and E Ubwari border faults. Thermal fluid circulation is permitted by crack openings following cleavage and fractures within the Precambrian basement, which seem to be related to N 130 degrees normal-dextral faults which locally intersect the N-S major trend. Analyses of hydrothermal fluids and sulphide mineralizations from sites in the area, as well as the identification of fault mechanisms, are presently in progress. They will allow both the origin and the pathways for hydrothermal fluids to be determined and permit the influence of such hydrothermal emissions on the lake water chemistry and hypolimnion structure to be determined. [R.E.S.]
Subjects:Ground water; Hot springs; Hydrothermal vents; Lacustrine environment; Mineralization; Seepage; Springs; Sulfides; Thermal waters; Africa; Burundi; Central Africa; Congo Democratic Republic; East African Lakes; East African Rift; Lake Tanganyika; Zaire
Abstract Numbers:93M/3178
Record ID:1996000089
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
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